Iconic indexing by 2-D strings
IEEE Transactions on Pattern Analysis and Machine Intelligence
VisualSEEk: a fully automated content-based image query system
MULTIMEDIA '96 Proceedings of the fourth ACM international conference on Multimedia
A spatial match representation scheme for indexing and querying in iconic image databases
CIKM '97 Proceedings of the sixth international conference on Information and knowledge management
Maintaining knowledge about temporal intervals
Communications of the ACM
Introduction to Modern Information Retrieval
Introduction to Modern Information Retrieval
Modeling of video spatial relationships in an object database management system
IW-MMDBMS '96 Proceedings of the 1996 International Workshop on Multi-Media Database Management Systems (IW-MMDBMS '96)
V-QBE: video database retrieval by means of example motion of objects
ICMCS '96 Proceedings of the 1996 International Conference on Multimedia Computing and Systems
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In this paper, we focus on a new spatio-temporal representation scheme which can efficiently model multiple trajectories based on several moving objects in video databases. The traditional methods only consider direction property, time interval property, and spatial relations property for modeling moving objects’ trajectories. But, our method also takes into account on distance property, conceptual location information, and related object information (e.g. player name having a soccer ball). In addition, we propose a similarity measure function that improves a retrieval accuracy to measure a similarity among multiple trajectories. The proposed scheme supports content-based retrieval using moving objects’ trajectories and supports semantics-based retrieval using concepts which are acquired through the location information of moving objects. Finally, from the experimental results using real trajectories extracted from soccer video data with soccer ball and player, the performance of our scheme achieves about 15-20% performance improvement against existing schemes when the weights of angle and topological relation are over two times than that of distance.